Abstract
Pulmonary mucormycosis is a life-threatening infection caused by a fungus that is part of the Mucorales family. Diabetes ketoacidosis has been classically described as the main risk factor for the disease. Tracheobronchial mucormycosis is an infrequent form of pulmonary mucormycosis that presents as a tracheobronchial tumor obstructing the airway. Few cases have been reported in the literature. We present a case of pulmonary mucormycosis that presented initially as a collapsed right upper lung, mimicking a tracheobronchial tumor. Early detection and treatment are key to avoid fatal outcomes.